NDLI: Non-isolated single phase uninterruptible power supply (UPS) system

Content Provider	IEEE Xplore Digital Library
Author	Aamir, M. Hee-Jun Kim
Copyright Year	2011
Description	Author affiliation: Dept. of Electronics, Electrical, Control, and Instrumentation Engineering, Hanyang University, Korea (Aamir, M.; Hee-Jun Kim)
Abstract	In this paper, a high performance single phase transformer-less online uninterruptable power supply (UPS) is proposed. The use of the bidirectional buck-boost converter with high conversion ratio not only reduces the number of batteries but also ensures a transformer-less system. The rectifier has capability of power factor correction and provides regulated DC link voltage whereas the inverter provides a regulated sinusoidal output voltage to the load. In order to control the transient effect, efficient control scheme is adopted in the system. The overall efficiency of the system is improved with significant reduction in size and weight of the system due to decrease number of batteries. Qualitative analysis and experimental results obtained with a 500VA prototype shows a normal efficiency of over 94% and an input power factor of over 99%.
Starting Page	2282
Ending Page	2289
File Size	1730811
Page Count	8
File Format	PDF
ISBN	9781612849584
ISSN	21506086
e-ISBN	9781612849577
e-ISBN	9781612849560
DOI	10.1109/ICPE.2011.5944468
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-30
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverter Bidirectional Converter Uninterruptable power supply (UPS) Capacitors Rectifiers Inverters Batteries Transformer-less Voltage control Inductors Uninterruptible power systems DC Link Voltage
Content Type	Text
Resource Type	Article

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